Carson’s little brother Colby joined the Boy Scouts recently. Carson notices that in addition to wearing the Boy Scout uniform, Colby has been better about keeping his everyday clothes neat and clean, has been searching online for camping gear, and has become interested in "green" products. Carson believes that the Boy Scouts are now a reference group for Colby because hea. has taken on many of the values, attitudes, or behaviors of group members. b.became a formal member of the group. became familiar with the group's activities. c.looked for information from members of the group regarding buying decisions. d.cannot control his involvement with the group.